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Brilliant_brown [7]
3 years ago
15

John wants to know the volume of his gold ring in cubic centimeters. He gets a glass in the shape of a rectangular prism with a

base 3 cm by 2 cm and fills the glass with 3.1 cm of water. John drops his gold ring in the glass and measures the new height of the water to be 3.7 cm.
What is the volume of John's ring in cubic centimeters?
Mathematics
1 answer:
const2013 [10]3 years ago
7 0
If you go to sc and slide to filter you’ll find one that solves the problem
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if α,β are the roots of the equation x^{2}-3x+2=0 form an equation whose roots are (α+β)² & (α-β)²
GuDViN [60]

<u>Solution</u><u>:</u><u>-</u>

Let's find roots of x² - 3x + 2

=> x² - 3x + 2 = 0.

=> x² - x - 2x + 2 = 0.

=> x ( x - 1 ) -2 ( x - 1) = 0.

=> ( x - 1 ) ( x - 2 ) = 0.

=> x = 2, 1.

Now

  • ( a + ß )² = (2+1)²=3²=9
  • ( a - ß )² = ( 2 - 1 )² = 1² = 1.

So , equⁿ would be ,

=> x² - ( 9 + 1)x + 9×1=0.

<u>=> x² - 10x + 9=0.</u>

6 0
2 years ago
I need help with number 3
Lynna [10]
The hexagon divides the circle into 6 parts. That means the angle projecting each side is: 360°÷ 6 = 60°

The area of a circle is: πr²
78.54 in² divided by pi is 25 making the radius = 5

I would then use SOH CAH TOA to solve for the side.. knowing the hypotenuse is the radius and the angle to split it into a right triangle is 30°

Sin(30) = s/5
5*Sin(30) = s

12*s = perimeter hexagon
(remember s is half the hexagon side)

12*5*Sin(30) = perimeter hexagon
30 inches  = perimeter

6 0
3 years ago
Christine has a bag of candy that contains 20 red pieces, 10 green pieces, 15 blue pieces, 25 brown pieces, and 10 orange pieces
andrew-mc [135]

Answer:

1/8

Step-by-step explanation:

20 + 10 + 25 + 15 + 10 =  80

10 / 80 = 1/8

4 0
1 year ago
The cost of a fridge has increased by 15% to £828 <br> Work out the original price
Afina-wow [57]
Muliply .15 to 828 and get your answer the add it to 828

4 0
3 years ago
Read 2 more answers
What is 3/16= c-7/8 please answer
Bingel [31]

Answer:

c=17/16

Step-by-step explanation:

3/16=c-7/8

find the common denominator

3/16=c-14/16

add 14/16 on both sides to cancel

c=17/16

7 0
3 years ago
Read 2 more answers
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